1276
The fur of the Arctic fox provides the best insulation of any mammal and its thickness increases by 140% during winter. This famous picture by Kevin Morgans shows an arctic fox shedding its winter coat
[source: buff.ly/3lEWThC]
[author's site: kevinmorgans.com]
1277
There's a mountain in the Tianmen Mountain National Park, Zhangjiajie, China, with a marvelous natural arch with a stairway leading to it
[read more: bit.ly/2uHvsrh]
[source of the clip: buff.ly/3GmDEkP]
1278
The migration of golden cownose rays in the Gulf of Mexico is a sight that will leave you breathless. It only happens twice a year and it's actually beyond beautiful [read more, photo by Florian Schulz: buff.ly/2Ku3aIU]
1279
The story of Theodore Hall, among the youngest Manhattan Project scientists, who finished high school at 14, graduated at Harvard at 18, entered program at 19. Fifty years later, before dying, he confessed he had been a Soviet informant the entire time: buff.ly/3lIxAvc
1280
See how elephants actually help shape the flow of the Okavango River. Their constant movement leaves behind bigger and bigger highways in the reeds, creating a mosaic of paths right across. Landscape architecture on a grand scale [full video: buff.ly/35Ea74H]
1281
Military pilots &and astronauts must endure tremendous amounts of g-forces during takeoff & maneuvers. They're trained for this type of pressure, and one test is the AGSM, anti-g straining maneuver. Watch this series of clips showing the effects on pilots: buff.ly/3Ivvg4g
1282
How do emperor penguins stay warm enough to survive in -40°C or colder? This group of penguins demonstrates the dynamics of staying warm: an ever-shifting positions within a massive huddle ensures that no penguin is on the outside of the mass for too long buff.ly/32ldAmC
1283
The Mandelbulb is a 3-dimensional fractal: since a canonical 3-dimensional Mandelbrot set does not exist, it is possible to construct Mandelbrot sets in 4 dimensions using quaternions & bicomplex numbers
[read more: buff.ly/2KyGDuj]
1284
This square mile of water in the Lembeh Strait, Indonesia has some of the strangest and most unique marine life on the planet [source, full video by Shark Bay Film: vimeo.com/59168847]
1285
Antennas for AM radio stations in the medium-wave band are generally the entire tower structure, as opposed to the towers for FM and TV station. The ball of plasma acts like a speaker and you can listen to the radio
[📹 read more: buff.ly/3E37yg6]
1286
The first recorded scientist in history was En Hedu’anna, the chief astronomer-priestess of Ur. She lived around 2300 BCE, the only daughter of the great empire architect Sargon of Akkad. Her works were studied for 500 years or more after her death buff.ly/3ekIUqO
1287
Many-plumed moths have unusually modified wings. Both fore- and hind-wings consist of rigid spines, from which radiate flexible bristles creating a structure similar to a bird's feather buff.ly/3y5snCK [photo by Kim, Tarsey Norfolk Moths: buff.ly/3EzawGq]
1288
Artist and art director Greg Edwards used Mental Canvas to push the boundaries of space and time, taking us on a graphic journey through the infinite space of his fantastical imagination [source + author's Instargam account: buff.ly/3ECe8HH]
1289
Penguins shoot 'fecal projectiles' up to 1.34 meters away from the nest to keep it clean. The birds can generate enough poo-propelling energy to send 'fecal bombs flying at speeds of nearly 5 mph (8 km/h) [read more: buff.ly/3iNLvgr]
1290
The San Francisco Garter Snake has been on the endangered list since 1967, and has been labeled the most beautiful snake in the U.S. Researches estimate only 1-2 thousand remain [read more: buff.ly/2OSHivm]
1291
Photographer Josh Anon captured the perfect moment in which the rising sun made this polar bear's backlit breath look like fire
[source: buff.ly/2FDooAk]
[author's site: joshanon.com]
1292
This is a clever variant of the Café wall illusion with an illusory motion addition by @AkiyoshiKitaoka: these rows are perfectly horizontal, and, they are not moving [read more: buff.ly/2KzUL6L]
1293
Before 3D printing there was the photo sculpture, a process invented in the XIX century for the reproducing subjects in 3-dimensions by taking a series of photos in the round. This is a 1939 footage
[📹 British Paté: buff.ly/3BYRmcW]
1294
This caterpillar filmed in Ecuador by the late Andreas Kay looks like a feather which presumably gives it an advantage in the struggle for survival since predators such as birds will not perceive it as food [source, HD, read more: buff.ly/36EhlHs]
1295
These Morphing Fractal™ engraving vise jaws made by Steve Lindsay can virtually morph to grip any object
[: buff.ly/3ozB6K0]
[read more: fractalvise.com]
1296
In 1st century BCE, Hero of Alexandria designed the first vending machine. When a coin was introduced via a slot on the top of the machine, a set amount of holy water was dispensed [read more: buff.ly/39phgcG] [video: buff.ly/2PdkPf4]
1297
YouTuber MenzMade created this type of robotic arm that has two stages and four degrees of freedom, being entirely mechanical without any motor. It is actuated with wire rope and routed through bike cable in order to make the two stages independent: buff.ly/3m3QJqf
1298
This baby zebra was born with spots instead of the species’ signature stripes. Wildlife photographer Abdelrahman Hassanein took a video of Tira, who has a genetic condition known as “pseudomelanism,” which causes abnormalities in zebra stripe patterns: buff.ly/2oP6S9M
1299
Aviation Week’s Rupa Haria took this video of a wing-morphing “flexfoil” demonstrator. It illustrates how the airfoil shape could change in flight to boost performance over a wide range of angles of attack, indicated airspeeds and Mach levels [source: buff.ly/3w3QyzM]
1300
Iconaster longimanus, or icon star, has a very peculiar appearance: it's like a star inside a star and has marginal row of large plates that resemble mosaic tiles
[read more: buff.ly/2FHTE0W]
[photo credits: buff.ly/2FG6Gfz]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links